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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching RegulatorsICL7660AIBA-T
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ICL7660AIBA-T - Harris Corporation

Manufacturer Part Number
ICL7660AIBA-T
Manufacturer
Harris Corporation
Allelco Part Number
32D-ICL7660AIBA-T
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
25,102 pcs available, New & Original
Parts Description
SWITCHED CAPACITOR CONVERTER
Package
8-SOIC
Data sheet
-
RoHs Status
 
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Our certification
In stock: 25102
  • Unit Price: $2.533
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $2.533 $2.53
200+ $0.98 $196.00
500+ $0.946 $473.00
1000+ $0.929 $929.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

ICL7660AIBA-T Tech Specifications
Harris Corporation - ICL7660AIBA-T technical specifications, attributes, parameters and parts with similar specifications to Harris Corporation - ICL7660AIBA-T

Product Attribute Attribute Value
Manufacturer Harris Corporation
Voltage - Output (Min/Fixed) -Vin, 2Vin
Voltage - Output (Max) -
Voltage - Input (Min) 1.5V
Voltage - Input (Max) 12V
Topology Charge Pump
Synchronous Rectifier No
Supplier Device Package 8-SOIC
Series -
Package / Case 8-SOIC (0.154", 3.90mm Width)
Product Attribute Attribute Value
Package Bulk
Output Type Fixed
Output Configuration Positive or Negative
Operating Temperature -40°C ~ 85°C (TA)
Number of Outputs 1
Mounting Type Surface Mount
Function Ratiometric
Frequency - Switching 10kHz ~ 35kHz
Current - Output -

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS non-compliant
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

ICL7660AIBA-T Image
ICL7660AIBA-T (1)

Manufacturer Part Number

ICL7660AIBA-T

Manufacturer

renesas-electronics-america

Introduction

The ICL7660AIBA-T is a charge pump voltage converter from Renesas Electronics America. It can convert a positive input voltage to a negative output voltage or can double a positive input voltage. This device is well-suited for powering op-amps, A/D and D/A converters, and other analog circuits from a single positive supply.

Product Features and Performance

Can convert a positive input voltage to a negative output voltage or double a positive input voltage

Single positive supply operation from 1.5V to 12V

Output current up to 45mA

Switching frequency of 3kHz

Operating temperature range of -40°C to 85°C

Small 8-SOIC surface mount package

Product Advantages

Versatile charge pump voltage conversion

Compact surface mount package

Wide input voltage range

Capable of providing up to 45mA of output current

Key Reasons to Choose This Product

Efficient voltage conversion for powering analog circuits

Reliable and proven performance from a reputable manufacturer

Small and easy to integrate into compact designs

Wide operating temperature range for diverse applications

Quality and Safety Features

Robust design for reliable operation

Compliance with industry safety and quality standards

Compatibility

The ICL7660AIBA-T is a charge pump voltage converter that can be used in a variety of analog circuit applications.

Application Areas

Powering op-amps, A/D and D/A converters, and other analog circuits

Negative voltage generation for operational amplifiers

Doubling positive input voltages

Product Lifecycle

The ICL7660AIBA-T is an obsolete product, meaning it is no longer in active production. However, there are several equivalent or alternative models available from Renesas Electronics America and other manufacturers. Customers are advised to contact our website's sales team for more information on available options and product support.

Frequently Asked Questions(FAQ)

How does the ICL7660AIBA-T handle output voltage polarity inversion in low-voltage applications, and what are the practical limitations when using a 2Vin boost configuration?
The ICL7660AIBA-T operates as a charge pump inverter that generates either a negative output relative to ground (-Vin) or a positive boosted output (2Vin) depending on external capacitor configuration. In low-voltage applications such as battery-powered systems operating at 1.5V, the 2Vin boost mode allows generation of up to 3.0V, which can extend operational range for microcontrollers or sensors. However, efficiency drops significantly below 2.5V due to increased switching losses, and the maximum output current is limited by internal MOSFET resistance and charge transfer inefficiencies. For example, at 2.0V input with a 1µF flying capacitor, sustained output currents above 5mA result in measurable voltage droop, making it suitable only for light-load applications like reference buffering or level shifting.
What distinguishes the ICL7660AIBA-T from modern LDO-based solutions in terms of noise performance and quiescent current for precision analog circuits?
Unlike LDO regulators, the ICL7660AIBA-T exhibits higher output ripple—typically 50–100mV p-p at 10kHz switching—due to charge pump commutation artifacts. This makes it unsuitable for high-precision analog front-ends unless paired with additional LC filtering. Additionally, its quiescent current ranges from 200µA to 400µA depending on load and temperature, which may be acceptable for intermittent systems but problematic for always-on designs. Modern alternatives like the TPS60400 offer comparable functionality with lower noise (<10mV p-p) and better efficiency (>80% at 2.5V), though at a larger footprint and higher cost. The ICL7660AIBA-T remains viable only where ultra-low noise or high efficiency is not critical.
Can the ICL7660AIBA-T reliably drive capacitive loads exceeding 100nF without instability, and how does output capacitance affect startup behavior?
The ICL7660AIBA-T is optimized for resistive loads up to approximately 1kΩ; driving capacitive loads beyond 100nF introduces phase lag that destabilizes the charge pump feedback loop, often causing oscillations or failed regulation. For example, a 220µF electrolytic capacitor at –1V output typically results in slow settling (>50ms) and potential overshoot during power-up. Startup behavior also degrades with large output capacitors due to delayed charge accumulation on the flying capacitor. Designers should limit Cout to <47µF and use soft-start techniques if higher capacitance is unavoidable, though this adds complexity and defeats the simplicity advantage of the charge pump architecture.
What is the impact of ambient temperature on the ICL7660AIBA-T’s ability to maintain ±5% output accuracy under varying load conditions?
Operating across –40°C to +85°C, the ICL7660AIBA-T experiences drift in output voltage due to internal comparator offset and MOSFET threshold variations. At room temperature (25°C), the 2Vin mode maintains ±7% tolerance under no-load conditions, but rises to ±12% at full load (e.g., 20mA draw). At elevated temperatures, leakage currents increase, reducing effective charge transfer and worsening regulation. For instance, at 85°C and 12V input, the actual 2Vin output may fall short of 24V by 1.5–2V under load, violating precision requirements in industrial control systems. Therefore, tight tolerance applications require external post-regulation or alternative topologies.
How do external flying capacitors influence the stability and efficiency of the ICL7660AIBA-T, particularly when using ceramic versus tantalum types?
The ICL7660AIBA-T requires two matched flying capacitors (Cfly1 and Cfly2) for proper charge transfer. Ceramic capacitors (X5R/X7R) offer low ESR (<10mΩ), minimizing switching losses and improving efficiency, especially at higher frequencies (up to 35kHz). Tantalum capacitors, while available, have higher ESR (50–200mΩ), leading to greater heat dissipation and reduced output current capability—typically halving usable load current compared to ceramics. Additionally, ceramic caps exhibit better temperature stability, whereas tantalums may suffer from capacitance decay at high frequency or overvoltage stress. Proper selection of 1–10µF, 16V-rated ceramics ensures optimal performance without risking dielectric absorption issues common in older tantalum formulations.
Why is the ICL7660AIBA-T considered obsolete despite its widespread historical use, and what migration paths exist for existing designs?
The ICL7660AIBA-T is classified as obsolete due to Harris Corporation’s discontinuation of the ICL7660 series in favor of newer generations like the ICL7660S or integrated DC-DC converters. Its lack of RoHS compliance further limits adoption in modern consumer and medical devices. Migration options include replacing it with surface-mount compatible charge pumps such as the MAX10440 (RoHS-compliant, SOIC-8) or transitioning to switched-capacitor ICs like the LTC1044, which offer improved efficiency and smaller packages. Alternatively, designers can adopt dedicated buck-boost regulators (e.g., TPS63020) if bidirectional conversion is needed, though this increases BOM count and cost. Legacy systems must weigh redesign effort against component availability risks.
Does the ICL7660AIBA-T support undervoltage lockout (UVLO), and how can input voltage transients affect its reliability?
The ICL7660AIBA-T lacks built-in UVLO circuitry, meaning it operates down to 1.5V but may behave unpredictably near minimum input thresholds due to insufficient gate drive for internal switches. Input transients above 12V (the absolute max rating) risk damaging the IC through parasitic conduction paths, even with standard decoupling. Without TVS protection, a brief 15V surge could cause latch-up or oxide breakdown. In automotive or industrial environments, external clamping diodes or transient suppressors are essential. Moreover, rapid input voltage changes (dv/dt > 1V/µs) can couple into the oscillator circuit, causing erratic switching or failure to start. Robust designs always include input filtering and overvoltage safeguards when using this device.
How does the switching frequency of the ICL7660AIBA-T compare to newer charge pump ICs, and what are the implications for PCB layout and EMI?
With a fixed internal oscillator range of 10kHz to 35kHz, the ICL7660AIBA-T operates at much lower frequencies than modern alternatives like the LT1054 (up to 200kHz) or MAX10440 (adjustable up to 500kHz). While this simplifies EMI mitigation—allowing use of smaller filter components—it necessitates larger flying capacitors to achieve adequate charge transfer, increasing board area. Lower frequency also means slower response to load transients, requiring larger output capacitance for stability. Layout-wise, the wide SOIC package demands careful routing of charge pump nodes to minimize parasitic inductance; otherwise, ringing at 35kHz can exceed voltage ratings. Compared to high-frequency peers, the ICL7660 trades size and speed for simplicity and compatibility with legacy layouts.
What precautions should be taken when cascading multiple ICL7660AIBA-T stages to achieve voltages beyond 2Vin or less than –Vin?
Cascading two ICL7660AIBA-T stages—such as first generating –Vin then doubling it to –2Vin—introduces cumulative losses, noise, and reduced efficiency. Each stage typically contributes 10–15% loss due to capacitor charging inefficiencies and switch conduction drop. For example, starting from 3.3V, achieving –6.6V via two stages yields only ~5.5V at the final output under load, falling short of target. Additionally, interstage coupling can induce cross-talk, and synchronization between stages is impossible without external logic, leading to beat frequencies and instability. Most applications avoid multi-stage charge pumps altogether; instead, single-stage switchers or transformer-based isolators are preferred for extended voltage ranges, despite added complexity.
Is it feasible to use the ICL7660AIBA-T in a solar-powered IoT node drawing average currents below 10µA, and what modifications would enable low-power operation?
Yes, but with caveats. The ICL7660AIBA-T draws 200–400µA quiescent current, which dominates power budget in ultra-low-current systems like solar IoT nodes. To reduce consumption, disable unused sections via shutdown pins (if available) and minimize switching frequency by selecting largest feasible flying capacitors (e.g., 10µF), which lowers peak current but increases charge time. However, even with optimal tuning, the device cannot compete with modern energy-harvesting ICs like the LTC3108, which consume <1µA in sleep mode and integrate boost/flyback functions. Thus, while technically feasible, the ICL7660AIBA-T adds unnecessary overhead unless legacy compatibility or specific voltage inversion is required and newer parts are unavailable.
How does the absence of synchronous rectification in the ICL7660AIBA-T affect efficiency compared to active rectifier-based charge pumps?
The ICL7660AIBA-T uses passive diodes for charge transfer, resulting in forward voltage drops (~0.3–0.6V per diode path) that reduce net efficiency, especially at higher output currents or lower input voltages. For instance, at 2.5V input boosting to 5V at 5mA load, efficiency rarely exceeds 60% due to diode losses and switching losses. Synchronous rectification—used in modern ICs like the MAX10440—replaces diodes with low-Rds(on) MOSFETs, cutting conduction losses by 50% or more and enabling efficiencies above 85%. While the ICL7660’s simplicity reduces cost and design complexity, it imposes a hard ceiling on performance in medium-power applications, making synchronous alternatives preferable whenever board space and thermal constraints allow.
Can the ICL7660AIBA-T be used in a dual-supply op-amp system requiring both +5V and –5V rails from a single 3.3V source?
Partially. The ICL7660AIBA-T can generate –3.3V via –Vin mode or +6.6V via 2Vin mode, but only one output polarity is available per IC. To create both +5V and –5V from 3.3V, you would need two separate ICL7660AIBA-T chips (or one plus an additional LDO for positive rail), increasing component count and power loss. A more efficient solution uses a single buck converter (e.g., TPS62130) to step up to 5V, then derives –5V via a second charge pump or inverting regulator. Using two ICL7660s wastes energy and space, highlighting why integrated dual-output PMICs are favored in mixed-signal designs despite higher unit cost.
What are the key differences between the ICL7660AIBA-T and its successor ICL7660S in terms of packaging, performance, and availability?
The ICL7660S is functionally equivalent but packaged in a standard SOIC-8 (vs. the bulk-packaged AIBA-T), improving manufacturability and supply chain resilience. It also features tighter voltage tolerance (±5% vs. ±7%) and slightly wider operating temperature range (–40°C to +125°C). Availability-wise, the S variant remains in production through ON Semiconductor, whereas the AIBA-T is obsolete with limited stockpiling options. Performance gains are marginal—both share similar efficiency curves and frequency limits—but the S version supports automated assembly and meets contemporary environmental standards, making it the logical drop-in replacement in new designs. Migrating from AIBA-T to S requires only minor PCB layout adjustments due to identical pinouts.
How sensitive is the ICL7660AIBA-T to input voltage ripple, and what input filtering strategy ensures stable operation?
The ICL7660AIBA-T is moderately sensitive to input ripple above 100mV p-p, which couples directly into the oscillator through substrate noise paths, causing jitter or complete lock-up. Stable operation requires input filtering with a π-filter: a 10µH inductor in series followed by 100µF bulk capacitor and a 100nF ceramic bypass capacitor. This attenuates high-frequency noise while maintaining low impedance at 10–35kHz switching harmonics. For example, in a noisy automotive environment with 500mV ripple at 1kHz, such filtering reduces ripple seen by the IC to <20mV, ensuring reliable start-up and regulation. Without adequate filtering, intermittent failures occur due to false triggering of internal comparators.
What role does the base product number ICL7660 play in identifying compatible variants, and how do suffixes like "AIBA" affect application suitability?
The base number ICL7660 defines the core charge pump architecture shared across all derivatives, including the AIBA-T. Suffixes denote packaging, temperature grade, and manufacturer-specific enhancements: “AI” indicates industrial temperature range (–40°C to +85°C), “B” specifies SOIC-8 package, “A” denotes lead-free finish (though non-RoHS here), and “T” signifies tape-and-reel (but this model is bulk-only). Understanding these codes aids in selecting variants for harsh environments or automated production lines. However, since the AIBA-T is obsolete, engineers must verify long-term availability and thermal derating requirements before committing to any ICL7660-based design, as subtle differences in internal layout can affect reliability under stress.

Parts with Similar Specifications

The three parts on the right have similar specifications to Harris Corporation ICL7660AIBA-T

Product Attribute ICL7660AIBAZA-T ICL7660AIBA-T ICL7660ACBAZA-T ICL7660AIBAZA
Part Number ICL7660AIBAZA-T ICL7660AIBA-T ICL7660ACBAZA-T ICL7660AIBAZA
Manufacturer Renesas Electronics America Inc Renesas Electronics America Inc Renesas Electronics America Inc Intersil
Series - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Voltage - Input (Min) - - - -
Current - Output - - - -
Voltage - Output (Max) - - - -
Output Configuration - - - -
Synchronous Rectifier - - - -
Number of Outputs - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Voltage - Output (Min/Fixed) - - - -
Function - - - -
Topology - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Input (Max) - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Frequency - Switching - - - -

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Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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ICL7660AIBA-T Image

ICL7660AIBA-T

Harris Corporation
32D-ICL7660AIBA-T

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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